Comtech EF Data RCS20 - Manual (Page 124)

RCS20 M:N Redundancy Switch Revision 15
Electrical Interfaces MN-RCS20 and CD-RCS20
5–24
5 Prime Modem 5 Fault ---
6 Prime Modem 6 Fault ---
7 Prime Modem 7 Fault ---
8 Prime Modem 8 Fault ---
9 Prime Modem 9 Fault ---
10 Backup Modem 1 Fault ---
11 No Connection ---
12 No Connection ---
13 No Connection ---
14 No Connection ---
15 Ground ---
5.4.2.4 J21 | RCU20
The J21 | RCU20 port is a 15-Pin High-Density Type D Female Connector used for connecting the GigE
(10/100/1000) Ethernet DDS-20 Backup Switch to the RCU20 control unit.
Pin No. Signal Name Signal Direction
1 Serial Control Clock IFS_LCLK Input
2 No Connection N/C ---
3 No Connection N/C ---
4 Ground GND ---
5 Ground GND ---
6 Logic +5 Volts VCC Input
7 Relay +6 Volts VCC_RELAY Input
8 No Connection N/C ---
9 No Connection N/C ---
10 Ground GND ---
11 Relay +6 Volts VCC_RELAY Output
12 Serial Control Data 1 IFS_LDAT1 Bidirectional
13 No Connection N/C ---
14 No Connection N/C ---
15 No Connection N/C ---